26ème Congrès Général de la SFP

Two-photon optical shielding of collisions between ultracold polar molecules

Jul 4, 2023, 9:21 AM

17m

Salle Violette Brisson

Contribution orale MC5 Physico-chimie des environnements atomiques et moléculaires froids et ultra froids Mini-colloques: MC05 Physico-chimie des environnements atomiques et moléculaires froids et ultra froids

Speaker

Maxence LEPERS (CNRS/Laboratoire ICB)

Description

We propose a method to engineer repulsive long-range interactions between ultracold ground-state molecules using optical fields, thus preventing short-range collisional losses. It maps the microwave coupling recently used for collisional shielding onto a two-photon transition, and takes advantage of optical control techniques. In contrast to one-photon optical shielding [Phys. Rev. Lett. 125, 153202 (2020)], this scheme avoids heating of the molecular gas due to photon scattering. The proposed protocol, exemplified for ²³Na³⁹K, should be applicable to a large class of polar diatomic molecules.

Presentation materials

Present_SFP_Lepers.pdf